Abstract
Wheat plants (Triticum aestivum L. cv. Gabo) were grown at two temperatures (18/13 and 24/19¦C, Day/night), either with full nutrient availability or deprived of nutrients after floral initiation or after anthesis, in order to identify possible interactions between nutrient availability and response to a temperature higher than the optimum for grain dry weight accumulation. Nutrient deprivation reduced levels of nitrogen, potassium and calcium in the vegetative organs of the plant at anthesis and maturity, and levels of nitrogen and calcium, but not potassium, in the grain. Differences in the distribution of nitrogen, potassium and calcium can be explained on the basis of their phloem mobility. An interaction was observed between nutrition and temperature in the time from seedling emergence to anthesis, the number of tillers at anthesis and the number of heads per plant at maturity. Within the main culm ear, high temperature and low nutrition reduced grain number. High temperature, but not low nutrition, reduced individual grain weights. However, there were no interactions between nutrition and temperature in regulating these responses. Therefore, although nutrition may be an important factor when considering the effect of temperature on tillering, there is no evidence from this study that nutritional status will mask the effects of temperature on the later stages of ear and grain development.
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Claims 8
Claim · model-written summary
Nutrient deprivation reduced nitrogen, potassium and calcium levels in the vegetative organs of wheat.
- Taxon
- Wheat
Triticum aestivume0 - Material
- cv. Gaboe0
- Organ / stage
- vegetative organse1
- Treatment
- Nutrient deprivatione1
- Outcome
- levels of nitrogen, potassium and calciume1
- Direction
- reducede1
- Comparator
- full nutrient availabilitye6
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Wheat plants (Triticum aestivum L. cv. Gabo) were grown at two temperatures”
e1“Nutrient deprivation reduced levels of nitrogen, potassium and calcium in the vegetative organs of the plant at anthesis and maturity, and levels of nitrogen and calcium, but not potassium, in the grain”
e6“either with full nutrient availability or deprived of nutrients after floral initiation or after anthesis”
Claim · model-written summary
Nutrient deprivation reduced nitrogen and calcium levels in wheat grain but not potassium.
- Taxon
- WheatTriticum aestivume0
- Material
- cv. Gaboe0
- Organ / stage
- graine1
- Treatment
- Nutrient deprivatione1
- Outcome
- levels of nitrogen and calciume1
- Direction
- reducede1
- Qualifier
- but not potassiume1
- Comparator
- full nutrient availabilitye6
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Wheat plants (Triticum aestivum L. cv. Gabo) were grown at two temperatures”
e1“Nutrient deprivation reduced levels of nitrogen, potassium and calcium in the vegetative organs of the plant at anthesis and maturity, and levels of nitrogen and calcium, but not potassium, in the grain”
e6“either with full nutrient availability or deprived of nutrients after floral initiation or after anthesis”
Claim · model-written summary
Nutrition and temperature interacted in determining the number of tillers at anthesis and heads per plant at maturity in wheat.
- Taxon
- WheatTriticum aestivume0
- Treatment
- nutrition and temperaturee2
- Outcome
- the number of tillers at anthesis and the number of heads per plant at maturitye2
- Direction
- interactione2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Wheat plants (Triticum aestivum L. cv. Gabo) were grown at two temperatures”
e2“An interaction was observed between nutrition and temperature in the time from seedling emergence to anthesis, the number of tillers at anthesis and the number of heads per plant at maturity”
Claim · model-written summary
Nutrition and temperature interacted in determining the time from seedling emergence to anthesis in wheat.
- Taxon
- WheatTriticum aestivume0
- Treatment
- nutrition and temperaturee2
- Outcome
- time from seedling emergence to anthesise2
- Direction
- interactione2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Wheat plants (Triticum aestivum L. cv. Gabo) were grown at two temperatures”
e2“An interaction was observed between nutrition and temperature in the time from seedling emergence to anthesis, the number of tillers at anthesis and the number of heads per plant at maturity”
Claim · model-written summary
High temperature and low nutrition reduced grain number within the main culm ear of wheat.
- Taxon
- WheatTriticum aestivume0
- Organ / stage
- main culm eare3
- Treatment
- high temperature and low nutritione3
- Outcome
- grain numbere3
- Direction
- reducede3
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Wheat plants (Triticum aestivum L. cv. Gabo) were grown at two temperatures”
e3“Within the main culm ear, high temperature and low nutrition reduced grain number”
Claim · model-written summary
High temperature reduced individual wheat grain weights, but low nutrition did not.
- Taxon
- WheatTriticum aestivume0
- Treatment
- High temperaturee4
- Outcome
- individual grain weightse4
- Direction
- reducede4
- Qualifier
- but not low nutritione4
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Wheat plants (Triticum aestivum L. cv. Gabo) were grown at two temperatures”
e4“High temperature, but not low nutrition, reduced individual grain weights”
Claim · model-written summary
There were no interactions between nutrition and temperature in regulating wheat tillering and grain responses.
- Taxon
- WheatTriticum aestivume0
- Treatment
- nutrition and temperaturee5
- Outcome
- these responsese5
- Direction
- no interactionse5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Wheat plants (Triticum aestivum L. cv. Gabo) were grown at two temperatures”
e5“However, there were no interactions between nutrition and temperature in regulating these responses”
Claim · model-written summary
Nutritional status is not shown to mask the effects of temperature on later ear and grain development in wheat.
- Taxon
- WheatTriticum aestivume0
- Treatment
- nutritional statuse7
- Outcome
- the effects of temperature on the later stages of ear and grain developmente7
- Direction
- will maske7
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Wheat plants (Triticum aestivum L. cv. Gabo) were grown at two temperatures”
e7“Although nutrition may be an important factor when considering the effect of temperature on tillering, there is no evidence from this study that nutritional status will mask the effects of temperature on the later stages of ear and grain development”